Thanks for the tip, Roger. I'll definitely look that stuff up as I'm buying Prevident from my dentist at 13 bucks a pop. But I also second Cheryl's advice about a Water Pik. I bought one a month ago and I love it. I put a squirt of Biotene mouthwash in the water and it really makes my mouth feel clean. I'll be interested to see if my hygeinist notices a difference. I also use a Sonicare toothbrush, which is terrific.

Update: just looked on Ebay for the Clinpro and it's considerably more expensive than Prevident. Also couldn't quite find it anywhere else online except for professional dental supply houses, which I've tried before and which won't sell to me. Oh well.